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Finding the Fourth Proportional to 127,950, 176,571 and 71,361.42

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Solution

The fourth proportional to 127,950, 176,571 and 71,361.42 is: 98,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,950 : 176,571 = 71,361.42 : x
  2. Step 2: Convert to fraction form
    127,950/176,571 = 71,361.42/x
  3. Step 3: Cross multiply
    127,950x = 176,571 × 71,361.42
  4. Step 4: Simplify right side
    127,950x = 12,600,357,290.82
  5. Step 5: Solve for x
    x = 12,600,357,290.82/127,950
  6. Step 6: Final answer
    x = 98,478.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.